<template>
  <div class="list" ref="wrapper">
    <div>
      <div class="area">
        <div class="title border-topbottom">当前城市</div>
        <div class="button-list">
          <div class="button-wrapper">
            <div class="button">{{this.$store.state.city}}</div>
          </div>
        </div>
      </div>
      <div class="area">
        <div class="title">热门城市</div>
        <div class="button-list">
          <div class="button-wrapper" @click="handelCityclick(item.name)" v-for="item in hotCities" :key="item.id">
            <div class="button">{{item.name}}</div>
          </div>
        </div>
      </div>
      <div class="area" 
      v-for="(item,key) of cities" 
      :key="key" 
      :ref="key"
      >
        <div class="title">{{key}}</div>
        <div class="item-list">
          <div class="item border-bottom" @click="handelCityclick(innerItem.name)" v-for="innerItem of item" :key="innerItem.id">{{innerItem.name}}</div>
        </div>
      </div>
    </div>
  </div>
</template>
<script>
import BScroll from "better-scroll";
export default {
  name: "cityList",
  props: {
    hotCities: Array,
    cities: Object,
    letter: String
  },
  mounted() {
    const wrapper = this.$refs.wrapper;
    // let scroll = new BScroll(wrapper);
    this.scroll = new BScroll(wrapper);
  },
  methods: {
    handelCityclick(city) {
      this.$store.commit("changeCity", city);
      this.$router.push("./");
    }
  },
  watch: {
    letter() {
      if (this.letter) {
        const ele = this.$refs[this.letter][0];
        this.scroll.scrollToElement(ele);
      }
    }
  }
};
</script>
<style lang="stylus" scoped>
.border-topbottom {
  &:before {
    border-color: #ccc;
  }

  &:after {
    border-color: #ccc;
  }
}

.border-bottom {
  &:before {
    border-color: #ccc;
  }
}

.list {
  position: absolute;
  top: 1.58rem;
  left: 0;
  right: 0;
  bottom: 0;
  overflow: hidden;

  .title {
    line-height: 0.54rem;
    background: #eee;
    padding-left: 0.2rem;
    color: #666;
    font-size: 0.26rem;
  }

  .button-list {
    padding: 0.1rem 0.6rem 0.1rem 0.1rem;
    overflow: hidden;

    .button-wrapper {
      width: 33.3%;
      float: left;

      .button {
        margin: 0.1rem;
        padding: 0.1rem 0;
        text-align: center;
        border: 0.02rem solid #ccc;
        border-radius: 0.06rem;
      }
    }
  }

  .item-list {
    .item {
      line-height: 0.76rem;
      padding-left: 0.2rem;
    }
  }
}
</style>
